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Spacecraft information: ATLAS CENTAUR R/B
Launch Details
| Launched | 29 June 1985 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 15874 |
| COSPAR ID | 1985-055B |
| Observing |
Current orbital elements
| Inclination | 23.381° |
| Eccentricity | 0.64555 |
| RA ascending node | 23.040 hr |
| Argument perigee | 297.875° |
| Mean anomaly | 11.951° |
| Orbital period | 429.200 min |
| Epoch of osculation | 20 May 2026, 11:57 |
Derived Quantities
| Min Altitude | 309.7 km |
| Mean Altitude | 12477.1 km |
| Peak Altitude | 24644.4 km |
Launched alongside
INTELSAT 511Orbital History
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